Absolute URLs travel better
Use full https:// URLs for og:url and og:image so parsers outside your site can fetch them reliably.
Result: (nothing yet)
Open Graph tags tell social platforms what title, description, URL, type, and image to use when someone shares a page. This builder focuses on the preview tags most teams paste into the HTML head before publishing a page.
The Open Graph protocol defines four required properties: og:title, og:type,
og:image, and og:url. In practice, og:description,
og:site_name, og:locale, and image width, height, and alt text make previews more
consistent and accessible. Twitter/X card tags can mirror the same content for platforms that read them.
The output is plain HTML. Paste it inside the page <head>, publish the page, then use each
platform's preview debugger when you need to refresh cached cards. This tool does not validate that a remote
image is reachable; it checks URL shape and formats tags locally.
Helpful assumptions: use absolute HTTPS URLs for pages and images, keep the title readable, write a clear description, and start with a 1200 by 630 image for large landscape cards. Individual platforms can crop, cache, or override previews.
The core Open Graph properties are og:title, og:type, og:image, and og:url. Description, site name, locale, image dimensions, and image alt text are useful additions.
Use 1200 by 630 for a landscape large card when you can. Keep important content away from edges because platforms may crop or resize the image.
No. Everything runs client-side in your browser; nothing is uploaded or stored on a server.
Use full https:// URLs for og:url and og:image so parsers outside your site can fetch them reliably.
og:image:alt and twitter:image:alt provide accessible context for the preview image when platforms support it.
Social platforms often cache previews. Use their debugger or card validator when a recently updated image does not appear right away.
Width and height tags help parsers reserve the right preview shape, but each platform still chooses its own crop and display treatment.
When Twitter/X tags are present, they can mirror the same title, description, URL, and image so the card remains predictable.